Dothideomycetes families incertae sedis » Trichopeltinaceae

Trichopeltella

Trichopeltella Höhn., Sber. Akad. Wiss. Wien, Math. - naturw. Kl., Abt. 1 119: 458 (1910).

Index Fungorum number: IF 5564; Facesoffungi number: FoF 07916, 1 morphological species (Species Fungorum 2022), no molecular data available.

Epiphytes on the upper leaf surface. Thallus, thin, superficial, membranous, lobed or root-like in outline, covering thyriothecia, comprising radially arranged cells Sexual morph: Thyriothecia, circular, solitary or some gregarious, covered by the thallus, round or elongate in outline, opening by irregular fissures. Asci 8-spored, bitunicate, broadly cylindrical or nearly spherical, apedicellate. Ascospores uniseptate, hyaline, smooth-walled. Asexual morph: Coelomycetous (adapted from Wu et al. 2014).

 Type species: Trichopeltella montana (Racib.) Höhn.

Notes: Trichopeltella is characterised by loose or dense network of pale brown thallus, brown to dark brown or black, globose to ellipsoidal ascomata, clavate, ovoid or saccate, apedicellate asci and brown, oblong or ovoid and some reniform ascospores. Höhnel (1910) placed Trichopeltella in Microthyriaceae based on morphology and this treatment was followed by Lumbsch and Huhndorf (2010). Hyde et al. (2013) did not agree with the above treatment and transferred Trichopeltella to Trichopeltinaceae (= Brefeldiellaceae) based on morphology mainly thyriothecia covered by a thallus, which is lobed in outline, comprising layers of radially arranged flattened cells or irregularly diverging in rows at the margin (Reynolds et al. 2005). Wu et al. (2014) examined the holotype specimen of T. montana (FH258804) and reported that the material was in poor condition and lacks asci and ascospores. Wu et al. (2014) however placed Trichopeltella in Trichopeltinaceae following Hyde et al. (2013) based on the thyriothecia composed of a layer of radially arranged flattened cells. Trichopeltella is a distinct genus in Trichopeltinaceae but molecular data is needed to confirm this taxonomic placement.

 

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